Numerical Simulation of Rock Blasting Induced Free Field Vibration

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Abstract

As the free field geological condition is usually complex, the conventional wave attenuation law established for the homogeneous open field may not be applicable for actual field situations. Thus, to understand the impact of the attenuation law and the geological features on the blast wave propagation, a field rock blasting test is conducted and the ground vibration is carefully monitored. To better understand the phenomenon, a numerical model considering the field geological features is established using the finite difference method. The field test results are then used to calibrate the numerical model. From the calibration, the parameters involved in the general form of peak particle velocity have been determined. It is demonstrated that the blast wave propagation in the free field is significantly governed by the field geological conditions, especially the interface between rock and soil layers.

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Gui, Y. L., Zhao, Z. Y., Zhou, H. Y., Goh, A. T. C., & Jayasinghe, L. B. (2017). Numerical Simulation of Rock Blasting Induced Free Field Vibration. In Procedia Engineering (Vol. 191, pp. 451–457). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2017.05.203

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